Ok but I love the idea of John having taught the boys morsecode (bc he learned it the military) and Sam and Dean gently tabbing things out on each other while cuddled a bit a too close in the back of the impala so they can have sercet little chats without John listening or finding love notes they've passed back and forth
And even when they grow up they keep doing it any time they can just out of habit and comfort and an excuse to touch each other as much as possible















